pull in one's horns vs crawfish

pull in one's horns is not a noun while crawfish is a noun.

Word	Noun	Adjective	Verb	Adverb
pull in one's horns	No	No	Yes	No
crawfish	Yes	No	Yes	No

As verbs, pull in one's horns and crawfish are synonyms defined as:

pull in one's horns and crawfish: make a retreat from an earlier commitment or activity

Other synonyms of pull in one's horns include back away, back out, crawfish out, pull back, retreat, withdraw.

pull in one's horns (noun)	crawfish (noun)
	large edible marine crustacean having a spiny carapace but lacking the large pincers of true lobsters
	small freshwater decapod crustacean that resembles a lobster
	tiny lobster-like crustaceans usually boiled briefly

pull in one's horns (verb)	crawfish (verb)
make a retreat from an earlier commitment or activity	make a retreat from an earlier commitment or activity