shove one's oar into

accordion music congnois costatolide half cut off highlows Laplandish lmtd (logarithmic mean temperature difference) mainvielle on-condition perknite(perkinite) position-register preorbital crest psychological life space rotten seedling of kelp sea-chests self-injurry self-righting boat siderochrestic anaemias tenzins two-compartment reservoir